+#define USBTMC_STATUS_SUCCESS 0x01
+#define USBTMC_STATUS_PENDING 0x02
+#define USBTMC_STATUS_FAILED 0x80
+#define USBTMC_STATUS_TRANS_NIP 0x81
+#define USBTMC_STATUS_SPLIT_NIP 0x82
+#define USBTMC_STATUS_SPLIT_IP 0x83
+
+#define USBTMC_STATUS_SUCC(x) (x == USBTMC_STATUS_SUCCESS)
+#define USBTMC_STATUS_WARN(x) ((x > USBTMC_STATUS_SUCCESS) && (x < USBTMC_STATUS_FAILED))
+#define USBTMC_STATUS_FAIL(x) (x >= USBTMC_STATUS_FAILED)
+